Canelo Alvarez to face Amir Khan on May 7, HBO pay-per-view

In a stunning announcement that comes out of nowhere, Golden Boy Promotions announced today that Canelo Alvarez will face Amir Khan on May 7, live on HBO pay-per-view from the brand-new T-Mobile Arena in Las Vegas.

This is not a fight that was even rumored at any point, and will mean that Khan (31-3, 19 KO) will be moving up in weight to face Alvarez (46-1-1, 32 KO) for the WBC middleweight title. The bout will be contested at 155-pound catchweight.

Here's the video that Golden Boy put up:

Alvarez, 25, won the WBC middleweight belt from Miguel Cotto on November 21 in Las Vegas, while Khan, 29, fought one time in 2015, beating Chris Algieri in May. This also marks a move for Khan, who had been fighting under Al Haymon's banner.

Khan has been hunting a mega money fight for a couple of years now, first a matchup with Floyd Mayweather, and then one with Manny Pacquiao, but neither panned out. Alvarez is a more calculated risk, as Canelo is a naturally bigger man and Khan has no experience fighting over 147 pounds. But for a money fight, there's no one out there bigger than Alvarez right now, what with Mayweather's retirement and Pacquiao's impending retirement after an April fight with Tim Bradley.

What do you think of this matchup? And how surprised are you?